c4countdown

Given it's presented by Richard and Carol it classifies as a Countdown "special", I believe. Indeed, that's what we've got it as on the wiki, not least as it chalks one up for Richard and Carol's appearances column.

C1: Challengers Anthony McPartlin & Declan Donnelly. They're entertainers from Newcastle, apparently.
C2: Challenger Sheila Clement-Jones. A teacher from Newcastle, she taught McPartlin at a young age.
CV: Carol Vorderman.
OT: Other words or solutions.

R01: I Y E N G R A T D
R02: 75, 5, 2, 7, 9, 10. Target: 517.
R03: H A T E S W I N D (conundrum)


And now a brief interlude before our main feature:

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Enjoy the show.

Round 1: I Y E N G R A T D

Ant: GRATED (6)
Sheila: grating
OT: DERATING (8) GRADIENT (8) READYING (8) TREADING (8)
Score: 6–0 (max 8)

Round 2: 75, 5, 2, 7, 9, 10. Target: 517.

Ant: 518. Mistake in working.
Sheila: 514. Mistake in working.
CV: 517. (75 × 7) − (10 − 2) (10)
Score: 6–0 (max 18)

Round 3: H A T E S W I N D

Sheila buzzes on 3 seconds to say WIN THE ADS which is correct.
Score: 6–10 (max 28)